<template>
  <div class="row" :style="rowStyle" :class="rowClass">
    <slot></slot>
  </div>
</template>

<script>
export default {
  name:'wheelRow',
  props:{
    gutter:{
      type:[Number,String]
    },
    align: {
      type: String,
      validator (value) {
        return ['left', 'right', 'center'].includes(value)
      }
    }
  },
  computed:{
    rowStyle(){
      let {gutter} = this
      return{marginLeft:-gutter/2 +'px',marginRight:-gutter/2 +'px'}
    },
    rowClass(){
      let {align} = this
      return[align && `align-${align}`]
    }
  },
  mounted(){
    this.$children.forEach((vm)=>{
      vm.gutter = this.gutter
    })
  }
}
</script>

<style scoped lang="scss">
.row{
  display: flex;
  flex-wrap: wrap;
  &:nth-child(n){margin-bottom: 5px;}
  &.align-left{ justify-content: flex-start;}
  &.align-right{ justify-content: flex-end;}
  &.align-center{ justify-content: center;}
}
</style>